German submarine ''U-561'' was a

Type VIIC Type VII U-boats were the most common type of German World War II U-boat. 703 boats were built by the end of the war. The lone surviving example, , is on display at the Laboe Naval Memorial located in Laboe, Schleswig-Holstein, Germany. Conc ...

U-boat U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role ...

built for

Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...

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Kriegsmarine The (, ) was the navy of Germany from 1935 to 1945. It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic. The was one of three official branches, along with the a ...

'' for service during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. She was

laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one o ...

on 28 February 1940 by

Blohm & Voss Blohm+Voss (B+V), also written historically as Blohm & Voss, Blohm und Voß etc., is a German shipbuilding and engineering company. Founded in Hamburg in 1877 to specialise in steel-hulled ships, its most famous product was the World War II battle ...

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as yard number 537, launched on 23 January 1941 and commissioned on 13 March 1941 under ''

Kapitänleutnant ''Kapitänleutnant'', short: KptLt/in lists: KL, ( en, captain lieutenant) is an officer grade of the captains' military hierarchy group () of the German Bundeswehr. The rank is rated OF-2 in NATO, and equivalent to Hauptmann in the Heer and ...

Robert Bartels Robert Bartels (28 April 1911 – 20 August 1943) was a German U-boat commander in World War II. Naval career Robert Bartels joined the ''Reichsmarine'' in 1935. From 1937 to June 1940, he served as a watch officer on . He went through U-boat fa ...

(

German Cross in Gold The War Order of the German Cross (german: Der Kriegsorden Deutsches Kreuz), normally abbreviated to the German Cross or ''Deutsches Kreuz'', was instituted by Adolf Hitler on 28 September 1941. It was awarded in two divisions: in gold for repe ...

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. ''U-561'' had a displacement of when at the surface and while submerged. She had a total length of , a

pressure hull A submarine hull has two major components, the ''light hull'' and the ''pressure hull''. The light hull (''casing'' in British usage) of a submarine is the outer non-watertight hull which provides a hydrodynamically efficient shape. The pressure ...

length of , a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...

of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder

supercharged In an internal combustion engine, a supercharger compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement. The current categorisation is that a supercharger is a form of forced induct ...

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

s producing a total of for use while surfaced, two

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GG UB 720/8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two

propeller A propeller (colloquially often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon ...

s. The boat was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . ''U-561'' was fitted with five

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s (four fitted at the bow and one at the stern), fourteen

torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, su ...

es, one SK C/35 naval gun, 220 rounds, and a C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.

Service history

The boat's service began on 13 March 1941 with training as part of the

1st U-boat Flotilla The 1st U-boat flotilla (German ''1. Unterseebootsflottille'') also known as the Weddigen flotilla, was the first operational U-boat unit in Nazi Germany's ''Kriegsmarine'' (navy). Founded on 27 September 1935 under the command of ''Fregattenkap ...

. During late July 1941, ''U-561'', along with 9 other German and Italian submarines, attacked

convoy OG 69 Convoy OG 69 was a trade convoy of merchant ships during the second World War. It was the 69th of the numbered OG convoys Outbound from the British Isles to Gibraltar. The convoy departed Liverpool on 20 July 1941Hague, pp.175&176 and was fou ...

en route from Liverpool to Gibraltar. ''U-561'' torpedoed and sank the 1,884 GRT British freighter ''Wrotham''. In November 1941, while travelling across the Atlantic ocean, she sunk two boats from convoy SC 53, the ''Meridian'' and the ''Cruisader''. She was transferred to the 23rd flotilla on 1 February 1942. In 15 patrols she sank five ships for a total of , plus one ship damaged and a second a total loss. She was sunk by torpedoes fired from Royal Navy's HMS ''MTB-81'' on 12 July 1943 at position in the

Straits of Messina The Strait of Messina ( it, Stretto di Messina, Sicilian: Strittu di Missina) is a narrow strait between the eastern tip of Sicily (Punta del Faro) and the western tip of Calabria ( Punta Pezzo) in Southern Italy. It connects the Tyrrhenian Se ...

Wolfpacks

She took part in two wolfpacks, namely: *Bosemüller (28 August – 2 September 1941) * Seewolf (2 – 15 September 1941)

Summary of raiding history

References

Bibliography

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External links

* * {{DEFAULTSORT:U0561 Submarines lost with all hands German Type VIIC submarines 1941 ships U-boats commissioned in 1941 U-boats sunk in 1943 U-boats sunk by British warships World War II submarines of Germany World War II shipwrecks in the Mediterranean Sea Ships built in Hamburg Maritime incidents in July 1943